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Beginner

Why Cisco Aironet 3800 setup showing Static IP devices of clients as 0.0.0.0

Using Cisco Aironet 3800 series AP's, why would a device be allowed to connect to AP, then get dropped after a while, and UI page shows devices somehow shows up as 0.0.0.0? We have industrial devices that go down to 1Mbs in order to keep connected to any network from noise, distance, RF reflections, and extreme factory conditions, the devices are 802.11g Industrial devices. Works great with off the shelf routers, and Unifi AP's etc. But for some reason, the IT doesn't know why the devices will go off line, and show the static IP's per device, show 0.0.0.0 on the UI list when they get kicked off the network or something.

 

I seen them be connected all day and pinged all day once, all good, then at 7PM PST time, seemed like they all started falling off the network, and IT gave a screen shot of list of devices show 0.0.0.0 as IP addresses, when they were just fine previously using their static IP addresses.

 

Using the devices themselves to see what the the network was telling them, one log showed dissociated due to inactivity? And was only on for a short amount of time, like 20 minutes or so, then couple more events, that weren't recognized by the devices, and then a final disconnect from the network kicking off the device. I read some where that it might have something to do with DHCP settings, since the devices require a static IP address? Thanks for "any" feedback on possible settings etc.

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Highlighted
VIP Advocate

Re: Why Cisco Aironet 3800 setup showing Static IP devices of clients as 0.0.0.0

To understand you correctly, you use a single 3800 model in ME mode, or do you also have a WLC?
If you have a WLC, which version is it running?
Is DHCP required enabled on the SSID?
Can you maybe post the logfile that you have checked?
Highlighted
VIP Mentor

Re: Why Cisco Aironet 3800 setup showing Static IP devices of clients as 0.0.0.0

1. If you assign the Static IP address then DHCP setting is out of the issue.

2. Are you using WLC to manage 3800 AP ? if yes then whcih Software version you are running on controller ?

3. Are AP in local mode or flexconnect mode ?

4. only 2.4 Ghz freq area having issue or 5 Ghz ?

 

Regards

Dont forget to arte helpful posts

Highlighted
Beginner

Re: Why Cisco Aironet 3800 setup showing Static IP devices of clients as 0.0.0.0

This is for a Large company using our product that has a massive Cisco installation. Switchs, and not sure if they are using WLC to manage the all 52 3800 APs, so not sure which version.

 

AP should be in local mode so 2.4Ghz spectrum doesn't get dropped from the flexible radio assignment.

 

Just the 2.4 GHz is getting dropped for our devices trying to be used in their network embedded devices with ample space to APs. Our device scans reveal data link rates are down to where they should be for an industrial device at min 1Mbs and 802.11g. And they connect, but out of the blue get dropped via only a few, or a LOT. But not sure if network goes down for updates then comes back up. I'm trying to debug an issue, with no help from IT. They get picky when adding a virtual SSID and adding devices by contractors to monitor things. Never any issues with our UniFi system.

 

This is just one log from our device. But when one goes down, only thing IT can show us this screen shot that he says all our devices that used to have IP's in the Cisco show 0.0.0.0 Ip addresses. We will then have to un plug a device for it to re-connect back to the Cisco network. Or wait a pretty long time then some will come back up. I brought a test debug device with UART output and left plugged in for no more than 20 minutes and got this that the network was telling the device to do, then disconnected it. But not sure if happening to all devices. Kinda random. Had all devices up all day, went back to hotel, then got a text at 7PM PST that all devices were going off line. 

 

Cisco screen shot is attached for more help.

 

Here is a basic debug output from our unit, can't say for sure network telling all units this at random times though. They are just collecting data periodically, so they take up no bandwidth.

 

Domain: FCC
MAC: 00 1E C0 35 F6 24 
SSID: SDBMS
Network Type: Infrastructure
Scan Type: Active Scan
Channel List: All channels in domain
Retry Count: 3
Beacon Timeout: 40
Security: WPA2
Power Save: Disabled
 
 WF_CSTATE_CONNECTION_IN_PROGRESS
 
 
New IP Address: 10.192.14.136
New SM Address: 255.255.254.0
New GW Address: 10.192.15.254
Port Address : 80
Event: Connection Successful
  bssid: 50:0F:80:41:74:82
  channel: 1
 
 WF_CSTATE_CONNECTED_INFRASTRUCTURE
 
Event: Connection Temporarily Lost -- eventInfo = Received disassoc : WF_DISASSOC_DUE_TO_INACTIVITY
Event: Connection Reestablished
  bssid: 50:0F:80:41:74:82
  channel: 1
Event: Connection Temporarily Lost -- eventInfo = Received disassoc : WF_UNSPECIFIED
Event: Connection Reestablished
  bssid: 50:0F:80:41:74:82
  channel: 1
Event: Connection Temporarily Lost -- eventInfo = Received disassoc : WF_UNSPECIFIED
Event: Connection Reestablished
  bssid: 50:0F:80:41:74:82
  channel: 1
Event: Connection Temporarily Lost -- eventInfo = Received disassoc : WF_UNSPECIFIED
Event: Connection Reestablished
  bssid: 50:0F:80:41:74:82
  channel: 1
[Disconnected]
 

Highlighted
Beginner

Re: Why Cisco Aironet 3800 setup showing Static IP devices of clients as 0.0.0.0

Static IP assigned specifically into the device? Or assigned via DHCP reservations thru the network itself?
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